Basic DTO validation

app/views/users.go

@@ -3,15 +3,17 @@ package views
 import (
 	"fmt"
 	"iris-test/app/lib/auth"
+	"iris-test/app/lib/helpers"
 	"iris-test/app/repository"
 
+	"github.com/go-playground/validator/v10"
 	"github.com/kataras/iris/v12"
 )
 
-type editUserJSON struct {
-	FirstName string `json:"first-name"`
-	LastName  string `json:"last-name"`
-	Email     string `json:"email"`
+type editUserRequestDto struct {
+	FirstName string `json:"firstName" validate:"required"`
+	LastName  string `json:"lastName" validate:"required"`
+	Email     string `json:"email" validate:"required,email"`
 	Password  string `json:"password"`
 }
 
@@ -20,6 +22,7 @@ func GetUsersPage(ctx iris.Context) {
 
 	pagination := repository.NewPagination()
 	ordering := []repository.Ordering{
+		repository.NewOrdering("updated_at", repository.ORDERING_DESC),
 		repository.NewOrdering("first_name", repository.ORDERING_ASC),
 		repository.NewOrdering("last_name", repository.ORDERING_ASC),
 	}
@@ -59,11 +62,27 @@ func EditUserPage(ctx iris.Context) {
 }
 
 func SaveUser(ctx iris.Context) {
-	var postData editUserJSON
+	var postData editUserRequestDto
 	err := ctx.ReadJSON(&postData)
 
 	if err != nil {
-		ctx.StopWithError(iris.StatusBadRequest, err)
+		// Handle the error, below you will find the right way to do that...
+		if errs, ok := err.(validator.ValidationErrors); ok {
+			// Wrap the errors with JSON format, the underline library returns the errors as interface.
+			validationErrors := helpers.WrapValidationErrors(errs)
+
+			// Fire an application/json+problem response and stop the handlers chain.
+			ctx.StopWithProblem(
+				iris.StatusBadRequest, iris.NewProblem().
+					Title("Validation error").
+					Detail("One or more fields failed to be validated").
+					Key("errors", validationErrors).
+					Key("success", false),
+			)
+			return
+		}
+		// It's probably an internal JSON error, let's dont give more info here.
+		ctx.StopWithStatus(iris.StatusInternalServerError)
 		return
 	}